2007 Mercury Grand Marquis vs. 2005 Opel Speedster
To start off, 2007 Mercury Grand Marquis is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Opel Speedster. In addition, the cost of maintenance, including insurance, on 2005 Opel Speedster would be higher. At 4,603 cc (8 cylinders), 2007 Mercury Grand Marquis is equipped with a bigger engine. In terms of performance, 2007 Mercury Grand Marquis (239 HP @ 4900 RPM) has 42 more horse power than 2005 Opel Speedster. (197 HP @ 5500 RPM). In normal driving conditions, 2007 Mercury Grand Marquis should accelerate faster than 2005 Opel Speedster. With that said, vehicle weight also plays an important factor in acceleration. 2007 Mercury Grand Marquis weights approximately 827 kg more than 2005 Opel Speedster. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2007 Mercury Grand Marquis (389 Nm @ 4100 RPM) has 138 more torque (in Nm) than 2005 Opel Speedster. (251 Nm @ 1950 RPM). This means 2007 Mercury Grand Marquis will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Speedster. 2007 Mercury Grand Marquis has automatic transmission and 2005 Opel Speedster has manual transmission. 2005 Opel Speedster will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Mercury Grand Marquis will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 Mercury Grand Marquis | 2005 Opel Speedster | |
| Make | Mercury | Opel |
| Model | Grand Marquis | Speedster |
| Year Released | 2007 | 2005 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Middle |
| Engine Size | 4603 cc | 1998 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 239 HP | 197 HP |
| Engine RPM | 4900 RPM | 5500 RPM |
| Torque | 389 Nm | 251 Nm |
| Torque RPM | 4100 RPM | 1950 RPM |
| Engine Bore Size | 90.2 mm | 86 mm |
| Engine Stroke Size | 89.9 mm | 86 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1832 kg | 1005 kg |
| Vehicle Length | 5370 mm | 3790 mm |
| Vehicle Width | 2000 mm | 1710 mm |
| Vehicle Height | 1490 mm | 1120 mm |
| Wheelbase Size | 2920 mm | 2340 mm |
| Fuel Consumption Overall | 11.8 L/100km | 8.5 L/100km |
| Fuel Tank Capacity | 72 L | 36 L |
